We all know the issue. Nobody buries treasure (and posts the map) because there's no point. You get rep (eventually), but you don't get coins. The problem is, that's a loss. At best, people will bury something to quickly hide it, but that leaves the map board mostly pointless still.
I would make changes to the board this way:
Burying treasure and posting treasure becomes a risk vs reward scenario. Quickly burying a treasure and posting the map works like maps do now. No gold, reputation/renown only.
However, as the map sits on your captains's table, the map slowly starts to become worth a percentage amount of the buried treasure when posted on the map board, capping out at 200% the buried value. What the correct amount of time is, I don't know. I would say 2-3 hours feels right to me, but that's just a gut feeling and I'm not tied to that. The map is ONLY worth that if your crew posts it, and once posted nobody tied to your crew/ship can take it down (so no waiting until it's germinated, posting it, then picking it up and digging up your treasure).
It's worth noting that the bonus is only tied to the map and what you recieve for posting it. The value of the underlying treasure does not change.
This introduces risk and reward. You have to carry the map with valuable treasure for a while, which risks losing it. This could be due to tuckers (which now have a reason to steal a map bundle), being sunk, etc. But, by holding onto it you could double your take (while doing other stuff).
It improves the map board, as it makes valuable maps more likely to be posted.
It creates a PVP target.
The one issue would be (as always) alliance servers abusing it.
